BT23L Car Bluetooth MP3 Player FM Transmitter Support Phone Hands-free PD Fast Charge One-key EQ Sound Effect Ambient light Features 1. 36W dual fast charge high-speed output, can charge 3 devices at the same time, intelligently identify the matching current, and will not damage the battery. 2. Super Bluetooth call effect, super microphone, 360-degree surround radio. 3. Ambient light with rhythmic music: the light is soft and melody, and on the way home at night, activate the bass 360 degree surround sound effect. 4. 5.0 Bluetooth chip, faster response, low power consumption, more stable connection, upgrade smart chip, automatic power off when charging. 5. Safe and fast charging, all dangers are filtered: CX8810 power management, over-current, over-temperature, over-voltage, short-circuit protection and other multiple protection functions. 6. Power-off memory playback, power-on to start automatic connection. The memorized channel and track will continue to play after power off and restart. 7. Intelligent voltage detection, safer driving, start the car, the battery voltage can be automatically detected. 8. One-key operation, Bluetooth hands-free call. Specification 1. Material: ABS 2. Working voltage: 12-24V 3. Output current: 5V1A+QC3.0+PD 20W 4. Bluetooth version: V 5.0 5. Frequency range: 87.5-108